Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling fluid pressure in direct contact with molding...
Patent
1987-04-02
1989-04-04
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling fluid pressure in direct contact with molding...
264 50, 264 51, 264DIG10, 264DIG15, 264DIG18, 425 4R, 425145, 425146, C08J 922, B29B 1300, B29C 1306
Patent
active
048184519
ABSTRACT:
A method of molding pre-foamed synthetic resin particles is described, which comprises increasing the pressure in a mold cavity with a pressurized gas, charging the mold cavity with pre-foamed synthetic resin particles as they are compressed with a gas pressurized to a pressure higher than the pressure in the mold cavity and heating the charged pre-foamed synthetic resin particles with steam so that they are fused together or expanded and fused together to form a foamed molded article, wherein a pressure detector is provided in a conduit for conveying the pre-foamed synthetic resin particles into the mold cavity as they are carried by the pressurized gas or at an inlet portion of a charging port leading to the mold cavity, and the supply of pre-foamed synthetic resin particles into the mold cavity is stopped when the pressure detected by the detector exceeds the pressure in the mold cavity by a predetermined amount. A blow-filing gun apparatus suitable for use in the practice of the molding method is also described.
REFERENCES:
patent: 3504068 (1970-03-01), Zizlsperger et al.
patent: 3953558 (1976-04-01), Hatano et al.
Arai Masakazu
Tanaka Masahiro
Anderson Philip
Mitsubishi Yuka Badische Co., Ltd.
LandOfFree
Method of preparing a foamed molded article and blow-filling gun does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of preparing a foamed molded article and blow-filling gun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing a foamed molded article and blow-filling gun will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-178581